Progress in Photovoltaics: Research and Applications

Cover image for Progress in Photovoltaics: Research and Applications

March 2010

Volume 18, Issue 2

Pages 79–154

  1. Research Articles

    1. Top of page
    2. Research Articles
    3. Research: Short Communications
    4. Literature Surveys
    1. High efficiency all-GaAs solar cell (pages 79–82)

      Abderrahmane Belghachi, Abderrachid Helmaoui and Ali Cheknane

      Article first published online: 15 JAN 2010 | DOI: 10.1002/pip.928

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      The simulated current voltage characteristics of GaAs solar cells using different emitter surface recombination velocities. To improve the performance of GaAs cells, the only way is to reduce the effect of surface recombination. This can be done by either using a heteroface window such as AlGaAs or the use of an FSF layer.

    2. High potential of thin (<1 µm) a-Si: H/µc-Si:H tandem solar cells (pages 83–89)

      S. Schicho, D. Hrunski, R. van Aubel and A. Gordijn

      Article first published online: 18 JAN 2010 | DOI: 10.1002/pip.929

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      In order to decrease production costs of a-Si:H/µc-Si:H tandem device the i-layer thicknesses of top and bottom cell were significantly reduced by a factor 3 to 4, leading to a sufficiently working, 500 nm thick tandem cell. Due to the very thin top cell the light induced degradation was found to be much lower compared to standard tandem cells. This resulted in stabilized efficiencies which can compete with other thin film solar cell concepts.

    3. Long-term energy production of III–V triple-junction solar cells on the Martian surface (pages 90–99)

      R. Hoheisel, S. P. Philipps and A. W. Bett

      Article first published online: 26 JAN 2010 | DOI: 10.1002/pip.939

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      Variation of solar irradiance on the Martian surface as a function of local time and season (sol) for a landing point on the southern hemisphere with latitude 15 °S. Realistic atomospheric dust profiles are considered. The influence of the Mars eccentricity and obliquity on the solar irradiance can be clearly observed.

    4. Detection of the voltage distribution in photovoltaic modules by electroluminescence imaging (pages 100–106)

      Torben Potthoff, Karsten Bothe, Ulrich Eitner, David Hinken and Marc Köntges

      Article first published online: 26 JAN 2010 | DOI: 10.1002/pip.941

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      We introduce an approach to determine the operating voltage of individual solar cells in photovoltaic modules by electroluminescence imaging. The reliability of this approach is verified by measurements on specially prepared photovoltaic modules allowing to measure the individual operating cell voltage. The experimentally measured cell voltages are deduced with an uncertainty of ±1% from an electroluminescence image.

    5. Six-element circuit for maximum power point tracking in photovoltaic-motor systems with variable-frequency drives (pages 107–114)

      C. Driemeier and R. Zilles

      Article first published online: 26 JAN 2010 | DOI: 10.1002/pip.949

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      A low-cost circuit made of two resistors, two capacitors, and two Zener diodes was developed for stable and efficient maximum power point tracking in autonomous photovoltaic-motor systems with variable-frequency drives. This article explains how the circuit works and presents test results with a photovoltaic pumping system. A detailed guide to apply this circuit to other photovoltaic-motor systems is provided.

    6. FPGA-based implementation of a real time photovoltaic module simulator (pages 115–127)

      H. Mekki, A. Mellit, S. A. Kalogirou, A. Messai and G. Furlan

      Article first published online: 26 JAN 2010 | DOI: 10.1002/pip.950

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      In this paper, an intelligent photovoltaic module has been simulated and implemented on reconfigurable Programmable Gate Array (FPGA) for a real time simulation, The designed MLP-photovoltaic module permits the evaluation of performance of the PV module using only environmental parameters and involves less computational effort.

    7. Effects of using multi-component electrolytes on the stability and properties of solar cells sensitized with simple organic dyes (pages 128–136)

      M. Giannouli, G. Syrrokostas and P. Yianoulis

      Article first published online: 26 JAN 2010 | DOI: 10.1002/pip.952

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      We examined some of the major factors affecting the efficiency and the stability of electrochemical TiO2 solar cells sensitized with an organic dye. Multi-component electrolytes were developed, containing potassium iodide and iodine dissolved in varying mixtures of propylene carbonate and ethylene glycol. It was demonstrated that the combined properties of the two solvents in the multi-component electrolytes enhance the efficiency and improve considerably the stability of the cells.

  2. Research: Short Communications

    1. Top of page
    2. Research Articles
    3. Research: Short Communications
    4. Literature Surveys
    1. You have free access to this content
      Efficiency (>15%) for thin-film epitaxial silicon solar cells on 70 cm2 area offspec silicon substrate using porous silicon segmented mirrors (pages 137–143)

      I. Kuzma-Filipek, K.V. Nieuwenhuysen, J.V. Hoeymissen, M.R. Payo, E.V. Kerschaver, J. Poortmans, R. Mertens, G. Beaucarne, E. Schmich, S. Lindekugel and S. Reber

      Article first published online: 26 JAN 2010 | DOI: 10.1002/pip.953

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      The embedded segmented porous silicon broad-band reflectors are formed by gradual increase of the spatial period between the layer-segments, allowing for an enhanced absorption of low energy photons in the epitaxial layer. By combining these reflectors with well established solar cell processing by photolithography, a conversion efficiency of 15.2% was reached on 73 cm2 area, highly doped offspec multicrystalline silicon substrates. The corresponding photogenerated current densities (Jsc) were well above 31 mA/cm2 for an active layer of only 20 µm.

    2. You have free access to this content
      Solar cell efficiency tables (version 35) (pages 144–150)

      Martin A. Green, Keith Emery, Yoshihiro Hishikawa and Wilhelm Warta

      Article first published online: 23 FEB 2010 | DOI: 10.1002/pip.974

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      Consolidated tables showing an extensive listing of the highest independently confirmed efficiencies for solar cells and modules are presented. Guidelines for inclusion of results into these tables are outlined and new entries since July 2009 are reviewed.

  3. Literature Surveys

    1. Top of page
    2. Research Articles
    3. Research: Short Communications
    4. Literature Surveys
    1. Photovoltaics literature survey (No. 76) (pages 151–154)

      Santosh Shrestha

      Article first published online: 23 FEB 2010 | DOI: 10.1002/pip.970

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      In order to help keep readers up-to-date in the field each issue of Progress in Photovoltaics will contain a list of recently published journal articles most relevant to its aims and scope. This list is drawn from an extremely wide range of journals, including IEEE Transactions on Electron Devices, Journal of Applied Physics, Applied Physics Letters, Progress in Photovoltaics and Solar Energy Materials and Solar Cells. To assist the reader, the list is separated into broad categories, but please note that these classifications are by no means strict. Also note that inclusion in the list is not an endorsement of a paper's quality. If you have any suggestions please email Santosh Shrestha at s.shrestha@unsw.edu.au.

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